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Reinfection rates among patients previously infected by SARS-CoV-2:systematic review and meta-analysis被引量：1
《Chinese Medical Journal》2022年第2期145-152,共8页Yinjun Mao Weiwei Wang Jun Ma Shanshan Wu Feng Sun 
This study is funded by grants from the National Natural Science Foundation of China(No.72074011);the National Key Technology R&D Program of China(No.2020YFC0840800);the National Key R&D Program of China(No.2021YFC2301601).
Background:Asymptomatic or symptomatic infection with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)can be followed by reinfection.The protection conferred by prior infection among coronavirus disease 201...
关键词：COVID-19 REINFECTION SARS-COV-2 RATE 
Preliminary Study on Feeding Habits of Anthocidaris crassispina
《Animal Husbandry and Feed Science》2017年第2期115-121,共7页Nie Yongkang Li Yong Zhou Zhigang Chen pimao Hong Jiezhang Huang Zeqiang Zhou Yanbo Qin Chuanxin Feng Xue Yuan Huarong 
Supported by National Key Technology R&D Program of China(2012BAD-18B02,2012BAD18B01-2);Public Science and Technology Research Funds Projects of Ocean(201205021-3);Special Scientific Research Funds for Central Non-profit Institutes(South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences)(2014TS07,2015TS05)
Abstract Employing experimental-ecological methods, the feeding and vitality of adult Anthocidaris crassispina were investigated. The results showed that A. cras- sispina exhibited an obvious preference on five differ...
关键词：Anthocidaris crassispina Feeding habit SEAWEED Daily feed intake rate 
Preliminary Study of Low Self-fertile Rate of ‘Kuijin' Apricot
《Agricultural Science & Technology》2016年第4期810-813,共4页韩雪平 薛晓敏 王金政 
Supported by the National Key Technology R&D Program in the"12thFive-Year Plan"of China(2013BAD02B03-3-3);the Subtopic of Agricultural Seeds Engineering Projects of Shandong Province"Breeding of New Species of Stone Fruits and Berries"~~
To research the self-sterility of apricot, the pollen germination of ‘Kuijin＇apricot was conducted in vitro, and pollen viability was determined by germination on solid medium. Meanwhile, the effects of different me...
关键词：APRICOT Pollen quantity Pollen viability Self-fertile setting 
A SERIES OF STRATEGIES FOR SOLVING THE SHORTAGE OF REFERENCE STANDARDS FOR MULTI-COMPONENTS DETERMINATION OF TRADITIONAL CHINESE MEDICINE被引量：1
《World Journal of Traditional Chinese Medicine》2015年第4期90-91,共2页Wenguang Wang Xiaoli Ma Pengfei Tu Yong Jiang 
financially supported by National Natural Sciences Foundation of China(No.81222051);National Key Technology R&D Program"New Drug Innovation"of China(No.2012ZX09304-005)
The shortage of reference standards has become the bottleneck of quality control of TCMs.In this study,a series of strategies,including one single reference standard to determine multi-compounds(SSDMC),quantitative an...
关键词：ESM A SERIES OF STRATEGIES FOR SOLVING THE SHORTAGE OF REFERENCE STANDARDS FOR MULTI-COMPONENTS DETERMINATION OF TRADITIONAL CHINESE MEDICINE 
Advances in Research on Water and Fertilizer Coupling and Its Effects on Rice Growth and Utilization Rate of Nitrogen被引量：1
《Agricultural Science & Technology》2015年第4期737-744,共8页徐优 邓久英 王学华 
Supported by National Key Technology Research and Development Program(2011BAD16B01,2012BAD04B10,2013BAD07B11)~~
At present, the shortage of agricuItural water resources is worsening. In order to reduce the rice irrigation water and improve the utiIization of fertiIizers so as to achieve the high and stabIe yielding of rice, thi...
关键词：Water and fertliizer coupling Rice yleId Utliizatlon rate of nitrogen 
Study and Application of "Three High and One Ensuring" Cultivation Mode of Double Cropping Rice被引量：5
《Agricultural Science & Technology》2012年第7期1425-1430,共6页彭春瑞 谢金水 邱才飞 钱银飞 关贤交 潘晓华 
国家科技支撑计划项目(2006BAD02A04,2011BAD16B04);江西省主要学科学术与技术带头人培养计划项目资助~~
A set of "three high and one ensuring" cultivation mode of double cropping rice, the core of which was high panicle bearing tiller rate, high seed setting rate, high grain plumpness and ensuring high quality, was expl...
关键词：Double cropping RICE PANICLE bearing TILLER RATE Seed setting RATE GRAIN PLUMPNESS GRAIN yield RICE quality 
Research on the Production Efficiency and Utilizing Rate of Potassium Fertilizer for Rape in Yunnan Province被引量：3
《Agricultural Science & Technology》2011年第10期1490-1494,1512,共6页符明联 李根泽 原小燕 程德荣 朱炫 魏生广 李红彦 彭识 雷元宽 贺斌 文和明 余绍伟 
Supported by the National Science and Technology Support Program(2009BADA8B01);Kunming Comprehensive Experimental Station,National Modern Agricultural Industrial Technology System of Rape(NYCYTX-00564);Yunnan Modern Agricultural Industrial Technology System Construction of Rape~~
[Objective] This study aimed at investigating the effects of consumption of potassium fertilizer on production and biological characteristics of rape and utilizing efficiency of potassium fertilizer.[Method] Taking 0 ...
关键词：RAPE Consumption of potassium fertilizer PRODUCTION Utilizing efficiency of potassium fertilizer 
The Antifreeze Critical Strength of Low-temperature Concrete Effected by Index被引量：1
《Journal of Wuhan University of Technology(Materials Science)》2011年第2期355-360,共6页刘军 
Funded by the National Key Technology R&D Program of China for the 11th Five-Year Plan(2006BAJ04A04);the Natural Science Foundation Project of Liaoning Province(20082008);the Nationd Natural Science Foundation of China(51072122)
The antifreeze critical strength and the pre-curing time of low-temperature concrete were studied by means of guaranteed rate of compressive strength and antifreeze performance for the structural safety requirement of...
关键词：guaranteed rate of compressive strength guaranteed rate of antifreeze performance antifreeze critical strength once freeze under air environment 
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